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Finding the Fourth Proportional to 19,993,953.03, 29,970,732.60 and 7,871,922.33

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Solution

The fourth proportional to 19,993,953.03, 29,970,732.60 and 7,871,922.33 is: 11,799,931.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,993,953.03 : 29,970,732.60 = 7,871,922.33 : x
  2. Step 2: Convert to fraction form
    19,993,953.03/29,970,732.60 = 7,871,922.33/x
  3. Step 3: Cross multiply
    19,993,953.03x = 29,970,732.60 × 7,871,922.33
  4. Step 4: Simplify right side
    19,993,953.03x = 235,927,279,200,398.97
  5. Step 5: Solve for x
    x = 235,927,279,200,398.97/19,993,953.03
  6. Step 6: Final answer
    x = 11,799,931.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.